Foreword

We are pleased to present here the reports from Topic Chairs, Keynote Speakers, Rapporteurs
and other presenters at the Seventh International Workshop on Tropical Cyclones (IWTC-VII),
together with the workshop program and other information.

The workshop is organised around four main topics, three keynote sessions, and six special
focus sessions, along with a presentation and panel discussion on tropical cyclones and climate
change. The keynote sessions focus on current issues at the interface of research and
operations: (i) surface wind structure and wind-pressure relationships, (ii) probabilistic
forecasting, and (iii) precipitation and flood modelling. The four topics are
(i) structure and intensity change, (ii) TC formation and extratropical transition,
(iii) TCs in intraseasonal to climate time scales, and (iv) disaster risks, mitigation,
warning systems and socio-economic impacts.

As in previous IWTCs, the main purpose of the reports is to review and document important
progress made since IWTC-VI in both research and transition into operational applications.
The reports also make initial recommendations for the IWTC-VII delegates to consider
during the workshop.

We are immensely grateful to all contributors for putting their time and energy into
these reports. There is a substantial amount of material here, reflecting the continuing
rapid growth of knowledge in our field. The contributors have done an excellent job in
gathering information with the help of their working groups, and in writing their reports.
These reviews will support a productive IWTC-VII, and serve as a valuable reference into
the future.

Jeffrey D. Kepert
CAWCR, Australia
Co-director, IWTC-VII

Chris Velden
U. of Wisconsin-CIMSS, U.S.A.
Co-director, IWTC-VII

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